Retevis R888s plus Walkie Talkie UHF 400-470MHz 3W FM CTCSS/DCS 16CH VOX Flashlight Handheld Transceiver (2 Pack) and Speaker Mic (2 Pack) and Programming Cable FM radio: Press the monitor key to open the machine, FM radio opened 1800mAH battery capacity:You can charge 3-4 hours,then you can use it for 8-12 hours continuous use or longer Busy Channel Lock Out:Prevents transmission whenever the unit detects another conversation on the same channel USB Programming Cable include:Connects your radio to your computer for fast and easy programming Range up to 3 miles (5 km) depending on environment and terrain